ClemensFischer/XAML-Map-Control
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Updated DrawingTileMatrixLayer and BitmapTileMatrixLayer

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This commit is contained in:
ClemensFischer 2025-12-09 17:42:54 +01:00
parent d777516e35
commit 5daaf01f6b
2 changed files with 24 additions and 30 deletions
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33
MapControl/WPF/BitmapTileMatrixLayer.WPF.cs
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@ -36,11 +36,9 @@ namespace MapControl
public class BitmapTileMatrixLayer(WmtsTileMatrix wmtsTileMatrix, int zoomLevel) : UIElement
{
private readonly ImageBrush imageBrush = new ImageBrush
{
ViewportUnits = BrushMappingMode.Absolute,
Transform = new MatrixTransform()
};
private readonly MatrixTransform transform = new MatrixTransform();
private WriteableBitmap bitmap;
public WmtsTileMatrix WmtsTileMatrix => wmtsTileMatrix;
@ -50,7 +48,8 @@ namespace MapControl
protected override void OnRender(DrawingContext drawingContext)
{
drawingContext.DrawRectangle(imageBrush, null, new Rect(RenderSize));
drawingContext.PushTransform(transform);
drawingContext.DrawImage(bitmap, new Rect(0d, 0d, bitmap.PixelWidth, bitmap.PixelHeight));
}
public void UpdateRenderTransform(ViewTransform viewTransform)
@ -59,8 +58,7 @@ namespace MapControl
//
var tileMatrixOrigin = new Point(WmtsTileMatrix.TileWidth * TileMatrix.XMin, WmtsTileMatrix.TileHeight * TileMatrix.YMin);
((MatrixTransform)imageBrush.Transform).Matrix =
viewTransform.GetTileLayerTransform(WmtsTileMatrix.Scale, WmtsTileMatrix.TopLeft, tileMatrixOrigin);
transform.Matrix = viewTransform.GetTileLayerTransform(WmtsTileMatrix.Scale, WmtsTileMatrix.TopLeft, tileMatrixOrigin);
}
public bool UpdateTiles(ViewTransform viewTransform, double viewWidth, double viewHeight)
@ -99,21 +97,17 @@ namespace MapControl
TileMatrix = new TileMatrix(TileMatrix.ZoomLevel, xMin, yMin, xMax, yMax);
CreateBitmap();
bitmap = new WriteableBitmap(
WmtsTileMatrix.TileWidth * TileMatrix.Width,
WmtsTileMatrix.TileHeight * TileMatrix.Height,
96, 96, PixelFormats.Pbgra32, null);
CreateTiles();
InvalidateVisual();
return true;
}
private void CreateBitmap()
{
var width = WmtsTileMatrix.TileWidth * TileMatrix.Width;
var height = WmtsTileMatrix.TileHeight * TileMatrix.Height;
imageBrush.ImageSource = new WriteableBitmap(width, height, 96, 96, PixelFormats.Pbgra32, null);
imageBrush.Viewport = new Rect(0, 0, width, height);
}
private void CreateTiles()
{
var tiles = new List<BitmapTile>(TileMatrix.Width * TileMatrix.Height);
@ -160,8 +154,7 @@ namespace MapControl
var x = width * (tile.X - TileMatrix.XMin);
var y = height * (tile.Y - TileMatrix.YMin);
((WriteableBitmap)imageBrush.ImageSource).WritePixels(
new Int32Rect(x, y, width, height), tile.PixelBuffer, 4 * WmtsTileMatrix.TileWidth, 0);
bitmap.WritePixels(new Int32Rect(x, y, width, height), tile.PixelBuffer, 4 * WmtsTileMatrix.TileWidth, 0);
}
private void OnTileCompleted(object sender, EventArgs e)